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Price:
on request
Product information updated 01 April 2024.
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Warranty:
12 months.
Warranty extension up to 5 years.
Terms of delivery:
To all regions of the country, international delivery.
Product information updated 01 April 2024.
Found cheaper?
Let us know. Our price is the best.
Warranty:
12 months.
Warranty extension up to 5 years.
Terms of delivery:
To all regions of the country, international delivery.
Technical characteristics
Current transformer TZLM-I (TZLM-1)
Also this device can be called: TZLMI, TZLM I, TZLM-1 TZLM1, TZLM 1, T3LM-I, T3LMI, T3LM I.
TZLM-I current transformer is designed to supply circuits relaying ground-fault individual lived through the transformation of a three-phase cable with any residual currents and installed on the cable.
Transformers are designed for installation in complete switchgear (KRU), can be manufactured in a plastic housing, and in the cast design (speaker).
Transformers TZLM-I have two versions of embodiment the diameter of the hole for the passage of the cable:
- diameter window TZLM-I-1 - 71 mm;
- diameter window TZLM-I-2 - 101 mm.
Specifications TZLM-I:
Rated voltage - 0.66 kV.
Rated frequency - 50 Hz.
The transformation ratio - 25/1.
A one-second thermal current - 140 A.
One minute test voltage - 3 kV.
| Type of relay | RT-140/0.2 | RTZ-51 | |
| Scale used relays | from 0.1 A to 0.2 A | from 0.02 A to 0.1 A | |
| Current setpoint | 0.1 A | 0.03 A | |
| Sensitivity of protection to the primary current | when a single transformer | 8.5 A | 2.8 A |
| a series connection of two transformers | 10.2 A | 3.2 A | |
| for parallel connection of two transformers | 12.5 A | 4.8 A | |
Housing material:
- TZLM-I-1 - fire resistant plastic;
- TZLM-I-2 - epoxy compound.
Transformer weight:
- TZLM-I cast resin - not more than 3.3 kg;
- TZLM-I in a plastic case - not more than 2.3 kg;
- TZLM-I-1 in the plastic case - not more than 3.6 kg;
- TZLM-I-2 with cast insulation - not more than 5.2 kg.
Ability to work transformers TZLM-1 microprocessor protection BMRZ firm STC "Mechatronics" series 75J60 company «Siemens», series P 120, P 140 company «Alstom».
Transformers TZLM-1 are formed as a support structure. The yoke is made of electrical steel. The secondary winding is wound on a magnetic core. Performs the role of the primary winding three-phase cable switchgear up to 10 kV, passed through a window transformers. Home insulation between the conductors of the cable and transformer secondary winding TZLM-I provided insulated cable.
Operating conditions TZLM-I:
Height above sea level - not more than 1000 m.
Top of the ambient temperature, taking into account heat the air inside the switchgear - +50° C.
Relative humidity at +25° C - 100%.
Environment not explosive, without dust, corrosive gases and vapors at concentrations that deplete the coating metals and insulation.
Transformers operating position in space - any.
Isolation transformers in the cast version - class B and class flammability FH (GHG) 1.
Isolation transformers, manufactured in plastic case - heat resistance class Y.
Transformers TZLM-1 have a climatic version "Y", category 2.
Photos: TZLM-I
TZLM-I transformer image.
TZLM-I front view.
TZLM-I side view.
TZLM-I rear view.
TZLM-I overhead view.
TZLM-I bottom view.
TZLM-I cast resin. Overall dimensions.
TZLM-I in a plastic housing. Overall dimensions.
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